STEVEN A. THOMPSON 

Executive Director 

December 5,2007 

OKLAHOMA 

3FPLfiTIIFNT SF -YVRONh"ENTAl CL~L Ti

OKLAHOMA DEPARTMENT OF ENVIRONMENTAL QUAI-ITY 

Guy Donaldson, Chief, Air Planning Section 

Mail Code (6PD-L) 

USEPA Region 6 

1445 Ross Avenue, Suite 1200 

Dallas, Texas 75202-2733 

BRAD HENRY 

Governor 

Subject: Oklahoma's Section 110 (a) (2) (D) Transport SIP & 2 

CAA Section 110 (a) (1) and (2) - Certification of Adequacy of Oklahoma's SIP -i_m 

P; 

Dear Mr. Donaldson, 

The purpose of this letter is to resolve two outstanding SIP issues. It will provide the additional 

information needed for approval of our transport SIP. Also, it will address the adequacy of Oklahoma's 

existing SIP to meet the requirements in CAA Section 110 (a) (1) and (2). 

Please find enclosed the additional information requested by your staff. The enclosure should be 

combined with our original transport SIP submittal (May 2007) and will provide additional assessments 

of Oklahoma's impact on the nearest modeled 2010 nonattainment areas. The enclosure is comprised of 

three parts and will add a new Part 7 to Chapter 111, Section A and new Appendices G and H. 

We have evaluated our existing SIP for implementation of the 1997 8-hour ozone NAAQS to determine if 

it includes all the requirements in Section 110 (a) (1) and (2) of the CAA and is consistent with the 

guidance provided to the Regional Air Division Directors from William T. Harnett, Director, Air Quality 

Policy Division on October 2, 2007. We conclude and certify that our SIP does meet these requirements. 

Over the next few months, we will be evaluating the particulate matter provisions of our SIP for 

consistency with federal requirements and will provide updates during our regularly scheduled 

AQDlEPA6 SIP planning conference calls. 

If you have any questions concerning this matter, please feel free to contact Cheryl Bradley or Leon 

Ashford at 405-702-4100. 

Sincerely, 

~ddie erri ill 

Division Director 

Enclosures 

707 NORTH ROBINSON, P.O. BOX 1677, OKLAHOMA CITY, OKLAHOMA 73101-1677 

printed on recycled paper wrth soy ink *, 

'.a 
State of Okla,homa 

Interstate Transport SIP 

Part 7 

December 4,2007 

This additional information clarifies the State of Oklahoma Air Quality State 

Implementation Plan (May 2007) which addresses interstate transport for the 8- 

hour Ozone and PM2.5 National Ambient Air Quality Standards. 

The following three pages are to be added as a new part 7, consisting of pages 

701, 702, and 703, to be inserted between pages 7 and 8 of the May 1, 2007 

submittal. 

Oklahoma Interstate Transport SIP for 8-hour Ozone and PM2.5 NAAQS 2007 
7. Additional Information 

The Clean Air Act requires that all states address interstate transport when a 

National Ambient Air Quality Standard is changed. EPA conducted modeling for its 

CAlR rule and identified areas that would not attain the ozone and PM2.5 standards 

in the year 2010. EPA guidance requires an assessment of the impact of 

Oklahoma's emissions on those areas. The closest down-wind 2010 

nonattainment area is Kenosha County, Wisconsin. Denton and Tarrant Counties 

in Texas are the closest up-wind 2010 CAlR nonattainment areas. 

Kenosha County, Wisconsin 

Currently, Kenosha County only has one ozone monitor (55 - 059 - 0019). In the 

CAlR modeling, EPA developed modeling design values (more stable values which 

are less affected by one good or bad year), which are the average of three design 

values as the basecase value. The modeling design values for the Kenosha 

monitor are listed below. 

From these numbers it is clearly evident ,that the Kenosha monitor's 2010 modeling 

design value should be well below the 91.3 ppb predicted by the CAlR modeling. In 

fact, the actual design value for 2004 - 2006 was 83 ppb (demonstrating 

attainment), and the 2005 - 2007 design value was just over the attainment value 

at 85 ppb. In the analysis in the Technical Support Document for the Final Clean 

Air Interstate Rule (March 2005) on pages 31 and 32, there is a list of the 2010 

nonattainment areas and the percent of 8-hour ozone due to transport. Kenosha is 

one of the lower values at only 37%. 

Although the impact of Oklahoma's emissions was not assessed for ozone in the 

CAlR modeling, it was assessed for PM2.5. Kenosha County, Wisconsin is not a 

PM2.5 nonattainment area, but nearby Cook County, Illinois is. Cook County is 

separated from Kenosha County by Lake County, Illinois, which is less than 25 

miles wide. The impact of Oklahoma's emissions on PM2.5 nonattainment areas 

was assessed and found to have no impact on Cook County. 

Back trajectories were performed for the ozone monitoring site in Kenosha County, 

Wisconsin for the years 2001 - 2007 (see Appendix G). The trajectories were run 

at 100, 500 and 1000 meter elevations for the preceding 96 hours, and at hour 21 

UTC for all of the days that the Kenosha ozone monitor recorded an 85 ppb or 

greater 8-hour averqge. Of the 56 trajectories, only 10 (1 8%) passed through any 

Oklahoma Interstate Transport SIP for 8-hour Ozone and PM2.5 NAAQS 2007 701 
part of Oklahoma. Of those trajectories, only 2 (3.6%) show Oklahoma to be less 

than 48 hours up-wind, and only 2 (3.6%) show the lowest level (100 meters) 

passing over Oklahoma. A majority of the trajectories show that once the air parcel 

leaves Oklahoma, it travels over many other states before passing over Kenosha 

County, Wisconsin. Below is an excerpt of the list of states and their CAIRmodeled 2010 ozone precursor emissions from Appendix B. These are the states 

most relevant in the analysis of these trajectories, listed by their order in the 

trajectory paths. 

VOC (tons per year) NOx (tons per year) 

0 kla homa 228,925 328,449 

Kansas 1 57,354 310,273 

Missouri 

l owa 233,847 1 87,024 

Illinois 530,864 558,324 

Denton and Tarrant Counties, Texas 

From Final Report DALLAS- FT. WORTH TRANSPORT PROJECT (April 6, 

2004)' 

On page 3-10 under TRAJECTORY ANALYSES CONCLUSIONS, two irr~portant 

concepts listed for this CAIR 2010 nonattainment area are: 

Under prevailing wind directions during high ozone events, up-wind sources 

lie to the east, southeast, and south of the core urban area, consistent with 

the spatial pattern of measured ozone design values. 

Trajectory analyses show that high ozone value events in DFW are 

associated with slow moving air parcels originating primarily from the east, 

southeast and south of the metropolitan area. 

On page 4-13 under COMPARISON OF ANTHROPOGENIC ATTRIBUTIONS 

WITH ZERO-OUT RESULTS, there is a list of all significant anthropogenic source 

groups impacting the Counties of Denton and Tarrant. The State of Oklahoma is 

not on the list. 

In the technical report, Dallas-Fort Worth Nonattainment Area Ozone Conceptual 

Model, Executive Summary, the second paragraph states: 

Stoeckenius, Till and Yarwood, Greg Final Report Dallas-FT Worth Transport Project 

Iittp,:/ li lcs. har~ ,cd~'~~_r~)i<(.~~j~.Q.up!i_t~ji.'[pi~:,c tsi11_~)2?. ~?_~J~,!.~~)~~~12?~>~f~"ygill Kcqo 1t~1xi. 2004. . . . . 

Oklahoma Interstate Transport SIP for 8-hour Ozone and PM2.5 NAAQS 2007 702 
Meteorology has an enormous impact on ozone formation and transport. 

On eight-hour exceedance days in the DFW area, the afternoon winds are 

typically light and come primarily from the east through the southeast. 

These afternoon wind patterns help to explain the location of the highest 

eight-hour ozone design values, which, based on 2005 data, occurred on 

the northwest side of the DFW area. The lowest eight-hour ozone design 

values occurred on the southeast side of the DFW area. As the light 

afternoon winds cross through the area from the east through the southeast 

on eight-hour exceedance days, the ozone concentrations increase until the 

highest levels are detected on the northwest side of the DFW area. 

Appendix H consists of a graphic from page 3-3 of Dallas-Fort Worth 

Nonattainment Area Ozone Conceptual Model, which demonstrates where air 

masses usually come from on days that the Dallas-Fort Worth area records an 8- 

hour ozone value equal to or greater than 85 ppb. Page 2 of Appendix H lists all of 

the major sources and their emissions that are located within the 50 - 100 endpoint 

density plot area in Oklahoma and provides a comparison of the emissions of that 

area to the emissions of the State of Texas. 

Conclusion 

The State of Oklahoma has a less than significant impact on all 2010 CAIR 

nonattainment areas for ozone and PM2.5. 

Oklahoma Interstate Transport SIP for 8-hour Ozone and PM2.5 NAAQS 2007 703 
State of Oklahoma 

Interstate Transport SIP 

Appendix G 

December 4,2007 

This additional information clarifies the State of Oklahoma Air Quality State 

Implementation Plan (May 2007) which addresses interstate transport for the 8- 

hour Ozone and PM2.5 National Ambient Air Quality Standards. 

The following 56 pages are to be added as a new Appendix G to be inserted 

behind Appendix F of the May 1, 2007 submittal. 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 13 Jun 01 

E DAS Meteorolgical Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 14 Jun 01 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 25 Jun 01 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 26 Jun 01 

E DAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 27 Jun 01 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 28 Jun 01 

EDAS Meteorolqical Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 29 Jun 01 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 15 Jul 01 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 16 Jul 01 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 17 Jul 01 

EDaS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 21 Jul 01 

EDAS Meteorological Data 
NQAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 31 Jul 01 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backwvard trajectories ending at 21 UTC 05 Aug 01 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 08 Aug 01 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 08 Jun 02 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 09 Jun 02 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 19 Jun 02 

E DAS Meteorological Data 

Trajector Direction Backward Duration : 36 hrs Meko Data EDAS 

Vertical dotion Calculation Mahod Mcdel Vertical Velm~ty 

Produced with HYSPLIT from the NOAA ARL Website [httu i,!www arl noaa awireadvll I 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 22 Jun 02 

E DAS Meteorological Data 

NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 24 Jun 02 

E DAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 30 Jun 02 

E DAS Meteorolajcal Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 07 Jul 02 

E DAS Meteorological Data 

~ ~ 

Job ID: 349293 Job Start: Thu Se 20 4 9:40:12 GMT 2007 

Source 1 lat.: 42.5037 Ion.: -87.8093 1 gk: 100! 500: 1000 rn AGL 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 15 Jul 02 

EDAS Meteorological Data 

0711 5 07/14 07/13 0711 2 

Job ID: 349315 Job Start: Thu Se 20 19:41:13 GMT 20W 

Source 1 la*. : 425047 Ion. : -87.8093 k~ts: 100; 500; 1000 rn AGL 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 17 Jul 02 

E DAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 26 Jul 02 

EDAS Metmr~lcgical Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 31 Jul 02 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 1 0 Aug 02 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 1 1 Aug 02 

EDAS Meteor~logical Data 

Trajector Direction Gackward Duration : 96 hrs Meko Data. EDAS 

Vertlcal dotton Calculation Method Model Vert~cal Velcc~ty 

Produced with HYSPLIT from the NOAA ARL Website I htto r'r'www arl nnaa aw:rearhrll I 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 07 Sep 02 

EDAS Meteorolqical Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 08 Sep 02 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 23 Jun 03 

EDAS Meteorological Data 

06123 06/22 OEjj2 1 MRO 

Job ID: 349599 Job Start: Thu Se 20 19:%:34 GMT 2007 

Source 1 lat : 42.5047 Ion.: -87.8093 1 gts: 100: 500! 1000 rn AGL 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 24 Jun 03 

E DAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 25 Jun 03 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 02 Jul 03 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 20 Aug 03 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 20 Jul 04 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 1 2 Sep 04 

EDAS Meteorological Data 

Data: EDAS40 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 07 Jun 05 

EDAS Meteor~llogical Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 23 Jun 05 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 24 Jun 05 

E DAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 27 Jun 05 

EDAS Meteorological Data 

Data: EDAS40 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 1 1 Jul 05 

EDAS Meteorolqical Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 17 Jul 05 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 01 Aug 05 

E DAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 02 Aug 05 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 07 Aug 05 

EDAS Meteorological Data 

Data: EDAS40 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 08 Aug 05 

EDAS Meteorological Data 

7 ,.. 

,' , .. ., 

Data: EDAS40 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 09 Aug 05 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 1 0 Sep 05 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 11 Sep 05 

ERAS Meteor-ological Data 
18 12 06 00 18 12 06 00 18 12 06 00 18 12 06 00 

09/12 0911 1 0911 0 09/09 

Job ID: 351552 Job Start: Thu Se 20 22:23:35 GMT 2007 

Source 1 1at.:42.5047 [on.:-87.80% E gts: 100!500! ~~OO~AGL 

Trajector Qirection Backward Duration 96 h,rs Meteo Data EDAS40 

Vertical dot~on Calculahon Method Mdel Vert~cal Velmlty 

Produced with HYSPLIT from the NOM ARL Website (http lr'www arl noaa gmfreadyl) 
NOAA HYSPLIT MODEL 

Forward trajectories starting at 21 UTC 16 Jun 06 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Forward trajectories starting at 21 UTC 17 Jun 06 

E DAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 22 May 07 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 29 May 07 

EDAS Meteorological Data 
NOAA HYSPLIT MODEL 

Backward trajectories ending at 21 UTC 16 Jun 07 

EDAS Metesrological Data 
State of Oklahoma 

Interstate transport SIP 

Appendix H 

December 4,2007 

This additional information clarifies the State of Oklahoma Air Quality State 

Implementation Plan (May 2007) which addresses interstate transport for the 8- 

hour Ozone and PM2.5 National Ambient Air Quality Standards. 

The following two pages are to be added as a new Appendix H to be inserted 

behind Appendix G of the May 1, 2007 submittal. 

fips county Plant lat Ion NOx VOC 

40023 Choctaw Co INTEGRATED RAILWAY PRODUCTS 34.01 74 -95.5367 5 9 

40023 Choctaw Co WESTERN FARMERS ELECTRIC COOP 34.01 36 -95.31 98 5,362 52 

40089 McCurtain Co WEYERHAEUSER COMPANY 33.9997 -95.1 151 2,637 493 

40089 McCurtain Co GEORGIA-PACIFIC CORP. 33.9281 -94.8691 19 1 54 

Year 1999 data Oklahoma total 8,024 709 

Texas total 866,019 187,983 

Page H-2